<div class="content__title">
    <h1>Download a file</h1>
</div>
<nz-card nzTitle="DEMO">
    <button nz-button *ngFor="let i of fileTypes" class="mr-sm"
        down-file [http-data]="data" http-url="assets/demo{{i}}" file-name="demo中文">{{i}}</button>
</nz-card>
